Sunderland boss Martin O'Neill has doubts over David Vaughan and Stephane Sessegnon ahead of tomorrow's daunting Barclays Premier League clash with Manchester United.

Black Cats
midfielder Vaughan returned early from international duty with Wales nursing a groin problem, while striker Sessegnon did not even meet up with Benin because of a similar injury, and both are being assessed.

However, defender Carlos Cuellar has been ruled out with the ankle problem he suffered in the 1-1 draw with Norwich and joins skipper Lee Cattermole (knee surgery) and striker Steven Fletcher (ankle ligaments), who will both miss the rest of the season
, on the sidelines.

All three could be involved at the Stadium of Light as the Red Devils
defend a 15-point lead at the top of the table, with Javier Hernandez and Antonio Valencia most likely to be excused due to their lengthy travels during the international break.